MeeBlip anode Synthesizer With Analog Filter (Version 2.5) Dual digital pulse oscillators derived from the original MeeBlip. Aliasing at the low end, anti-aliasing at higher ranges, for perfect bass sounds and terrific leads alike. An original, all-analog filter with resonance. (Its a new Twin-T VCF, designed especially to be aggressive for bass sounds.) Two variable pulse width oscillators with switchable PWM for thicker sounds. MIDI input via standard MIDI DIN port. MIDI control of all parameters, with the exception of (analog) filter resonance. Fully open source hardware.